Key witness testifies in prison escapee murder trial

The girlfriend of the escaped inmate accused of carjacking and killing an Oklahoma couple took the stand Monday to testify about how they chose their victims and when John McCluskey decided to kill them.

The final moments of Gary an Linda Haas' lives were revealed in graphic detail in federal court on Monday. In 2010, the couple was vacation in Santa Rosa when they were carjacked by a group of desperate prison escapees, according to authorities.

McCluskey's girlfriend, Casslyn Welch, took the stand and testified how she helped McCluskey and two others escape from an Arizona prison. She said McCluskey and Tracy Provence ambushed the Haas family at gunpoint and demanded she search their camper for guns.

Welch claimed the Haas's told them they didn't have any guns, but they found three stashed in a closet. Moments later she said she heard two gunshots from inside the camper and McCluskey asked Provence to help him move the bodies. She testified that the scene was gruesome and blood was seeping out of the camper.